Tuyere



`lune 10, 1930. A. H. FosblCK TUYRE Filed May 21. 1928 INVENTOR BYWQ/@f' Patented June 10, 1930 UNITED- STATES PATENT OFFICE ALEXANDER n.Eosnromor BETHLEHEM, PENNSYLVANIA, AssIGNoE 'ro HEM STEEL COMPANYBETHLE- TUYRE Applicatie mea may 21,

My invention relates totuyres for blast furnaces and more especially tothe type which has its body water-cooled and its nose portion filledwith refractory material for protection from the excessive heat to whichtuyres are subjected.

The object of my invention is to provide a two-piece tuyre comprising aplurality of members made of metal having different physicalcharacteristics.

Another object of my invention is to provide a two-piece tuyre,comprising a nose portion and a body portion, the nose portion of whichis first filled with refractory material and thenfastened to the' bodyportion by suitable fastening means.

A further object of my invention is Vto provide a tuyre having its noseportion so assembled that it may be replaced, whenever occasionrequires. The novel features of my invention will be more fullyunderstood from the following description and claims taken with thedrawing in which:

Fig. 1 is a longitudinal section of the tuyre.

Fig. 2 is a cross sectional view taken on the line 2-2.

Fig. 3 is a sectional view taken on the line 3--3.

Referring tothe drawings the tuyre 10 comprises two portions, a taperingcylindrical body portion 11, which is preferably of copper which has ahigh coefficient of heat transmission, and a nose portion 12 which ispreferably of ferrous metal which is resistant to wear, although othermetal may be used for either of the parts to meet requirements. The'bodyportion 11 is provided with an annular passage or chamber 13, throughwhich cooling water is circulated. The outer end of the body 11 istapped at 14' and 1'5, toy receive -water inlet and o'tlet pipes 16 and17, respectively.

The body 11 is provided at the other end with an annular offset 18 whichprovides a seat for the nose portion 12 when the tuyre is in its'assembled condition. Holes are tapped. in the body portion at19to-rece1ve rial, whereas the more 1928. 'Serial No. 279,344.

means for fastening the nose and the body portions together.

The nose 12 comprises two cylindrical parallel walls 20 and 21 havingrecesses 22 i therebetween and a connecting end portion 23. The outerwall 20 extends a short distance beyond the inner Wall 21 and isprovided with holes 24 to receive means for fastening the nose to thebody. Preferably j i the recesses 22 are separatedv by ribs 25 which arecast integral with the walls 2O and 21 and the end portion 23. The ribs25 terminate short of the inner end 26 of the` nose portion 12, and anannular groove 27 is thus formed into which the end 28 of body por- Thenose portion` l2 and the body portion '11 are assembled into a tuyre byplacing the nose portion 12 over the end 28 of the body portion 11 untilthe inner Wall 21 of the nose portion 12 rests against the offset 18.The two parts are then fastened together by inserting screws 30 throughthe holes 24 of the wall 20 of the nose portion and screwv ing them intothe tapped holes 19 of the body 11, or these parts may be connectedtogether by any other well known fastening means. The end 28 of the bodyportion 11 which extends into the groove 27 is now surrounded by therefractory materiall on one side and th'e cooling water chamber on theother, thus inprotection of this part from excessurmg the; sive heat.

It will thus be seen that I have devised a tu'yre having its majorportion made of a metal which transmits heat rapidly and having'its nosemade 'of a comparativelyinexpenslve metal, compared 4to copper, for

resist-ing the wear to which it is subject in the furnace. With thisconstruction the portion of the tuyre which rapidly wears away inservlce 1s of compartivelyinexpensive mateexpensive metal forming thebody, which consitutes the water chamber, may be utilized again.

While I have shown my invention lin but one form, it will be obvious tothose skilled in the art that it is not so limited, but is sus ceptibleof various other changes and modi- 5 cations without departing from thespirit thereof, and I desire, therefore, that only such limitationsshall be placed thereupon as are imposed by the prior art or as arespecically set forth in the appended claims.

lo I claim: y

1. A tuyre comprising a copper bodyportion, Aa detachable ferrous metalnose por- `tion, said body portion having an annular water chambertherein, said nose portion 15 comprising spaced inner and outer walls,means integrall with said walls forming a closure for the outer end ofsaid nose portion, and means comprising the extremity of the `-bodyportion adapted to provide a closure for zo the inner end of the saidnose portion.

2. A tuyre comprising a copper body portion, a detachable ferrous metalnose portion, said body portion having an annular water chamber therein;said nose portion u comprising spaced inner and outer walls, meansintegral with said walls forming a closure for the outer end of saidnose portion..

' a filling of refractory material between said walls, said refractorymaterial yterminating .so adjacent the extremity of the body portion Awhich contacts with t e nose portion.

3. A tuyre comprising a body portion, a detachable nose portion, saidnose portion y comprising spaced inner and outer walls,

35 means integral with said walls forming a closure for the outer end ofsaid nose portion and means com rising the extremity of the body portiona apted to provide a closure for the inner end of said nose portion.

4. A tuyre comprising a body portion, a

' detachable nose port1on,rsa1d nose portion comprising spaced inner andouter walls, means integral with said walls forming a closure for theouter end of said nose portion,

` 5 means comprising the extremt of the body portion adapted to providea c osure for the inner end of said nose portion and means fordetachably fastening the body and the nose portions together.

' 5o In testimony whereof I hereuntoV aiiix my signature.

ALEXANDER H. FOSDICK.

